on windows if I move my mouse to the end of the screen it scrolls the map left, right, etc. but if I move my mouse off the game screen it stops scrolling.

On mac on the other hand, if I move off the screen it continues to scroll until I change window focus to something else. Also, if I change focus back to the window and my mouse isn't over the game screen it'll start scrolling in the direction of where my mouse is.